不同茶树品种制绿茶贮藏过程中生化成分变化比较探究.pdfVIP

不同茶树品种制绿茶贮藏过程中生化成分变化比较研究 赵 熙 ，黄怀生，粟本文，银 霞，郑红发 (湖南省农业科学院茶叶研究所，湖南长沙 410125) 摘要：研究比较了黄金茶 1 号、黄金茶 2 号和福鼎大白茶 3 个茶树品种制成炒青绿茶贮藏过程中的品质成分动态 变化。结果表明，黄金茶 1 号、黄金茶 2 号和福鼎大白茶制绿茶茶多酚含量（降幅分别为13.96%、15.86%和 26.29% ） 和水浸出物含量（降幅分别为 9.81%、10.00%和 16.28%）均显著降低，且前两个月降幅较大；氨基酸含量总体下 降（降幅分别为 20.87% 、23.50%和 37.94% ），其中贮藏第四个月出现小幅上升；咖啡碱含量前 3 个月的下降幅 度（7.99%、10.82%和 13.84%）较大，此后变化幅度减小；叶绿素含量明显下降（降幅分别为 15.92%、17.81% 和 28.49% ）；可溶性糖含量呈现先高后低的波浪形变化。三个品种间比较，黄金茶 1 号、黄金茶 2 号所制绿茶在 贮藏过程中的主要生化成分下降幅度显著低于福鼎大白茶，表现出较好的化学品质特征。 关键词：茶树品种；贮藏；生化成分；动态变化；比较研究 Comparative Study on the Changes of Green Tea′s Store Biochemical Composition of Different tea Varieties ZHAO Xi, HUANG Huaisheng, SU Benwen, YIN Xia, ZHENG Hongfa （Tea Research Institute, Hunan Academy of Agriculture Sciences, Changsha,410125, China ） Abstract: The main biochemical components changes of green tea′s of different tea varieties Huangjincha 1, Huangjincha 2 and Fuding Dabaicha were studied and compared. The results indicated that, both the polyphenols ( decreasing range 13.96% 、15.86% and 26.29%) and water extract (decreasing range 9.81%、10.00% and 16.28%) content decreased significantly, and the former two months decreasing range greatly; Amino acid content of the overall decline ( decreasing range 20.87%、 23.50% and 37.94%), and a small rise of storage for a fourth month; Caffeine content in the first 3 months of decline greatly ( decreasing range 7.99% 、10.82% and 13.84%), After this change amplitude decreases; Chlorophyll content declined obviously ( decreasing range 15.92%、17.81% and 28.49%); Soluble sugar content is presented after the first high low undulating changes. The main biochemical components changes of green tea′s of Hua